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1, 2, 11, 70, 503, 3864, 31092, 258654, 2206655, 19200610, 169739843, 1520241320, 13764959908, 125792608400, 1158745944312, 10747830197070, 100295912869263, 940958196049830, 8870071185895425, 83972749650989430, 798033019890224415, 7610570090722324320, 72810031747355657040
(列表;图表;参考;听;历史;文本;内部格式)
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